Improvement in mowing-machines



W. AQ WOOD.

` Mnwing-Macrhine. m1635128l Patented May11,1s75.

UNITED SrArns A'rnN'r GrrrcnQ WILLIAM ANSON WOOD, OF ALBANY, NEW YORK.

IMPROVEMENT IN NlWlNG-MACHINES.

Sprcication forming part of Letters Patent No. l63,28, dated May 11,1875; application filed January 4, 1875.

To all whom it may concern:

Be it known that I, WILLIAM ANsON WOOD, ofthe city and county of Albany,and State of New York, have invented certain new and useful Improvementsin M owing-Machines, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawing, makingpart of this speciiication, in which- Figure l is a perspective view ofthe main and cutter frames, taken from the inner grain side of themachine. Fig. 2 is a section through a portion of the crank-shaftsleeve, also the coupling-sleeve, crank-wheel, and crank-wheel guard;and Fig. 3 is a transverse section through the main brace orcouplingrod, showing the spring loop or latch through which the pitmanplays, also in section.

The invention consists in providing the double-jointed coupling-arm,which connects the cutting apparatus with thel main frame, with aforward extension, curved upward in front of the pitman, and ahemispherical shield vibratin g with the coupling-arm, whereby thecrank-wheel and pitman are protected, as will be explained; and to anovel device for holding the pitman in proper position and guiding thesame when making its stroke, all as hereinafter explained.

In the accompanying drawings, A represents the main frame; B, the axle;C, the secondary or bevel-wheel shaft 5 D, the crankshaft sleeve; D',the crank-shaft, and E the thrust-brace. F is thecoupling-rod or mainbrace, which is provided at its inner end with a hub or sleeve, F1,which is mounted on the lower or forward end of the crank-shaft sleeve Din such manner as to be free to rotate thereon. The sleeve D, near itsforward end, is provided with a flaring collar, d, against the forwardface of which the inner or rear end of the hub or sleeve F1 abuts. Thehub F1 has formed on its outer face a notched or recessed spur, f, whichprojects beyond the inner or rear face of the hub, said projecting endextending over the Haring collar, and conforming on its inner face tothe external outlines, in cross-section, of said collar. The collar d isprovided with a notch or slot, df, on its lower side, which, when thecouplingarm is turned into a vertical position, permits the spur to passthrough and beyond the collar, and when said coupling-arm is turned toits proper position to be connected with the shoe the spur or hook fengages with the collar, and holds the coupling arm connected with thecrank-shaft sleeve, at the same time permitting its free rotationthereon. The hub or ,sleeve F1 is enlarged at its forward end, as shownat F2, to receive the crank-wheel, and over the front of thiscrank-wheel is placed a hemispherical shield, F3, secured to the part F2by bolts or otherwise, in such manner as to vvibrate with the sleeve andcoupling-arm to which it is connected, thus causing the slot orperforation through which the pitman works to maintain a uniformrelation to the pitxnan-rod, while, at the same time, it effectuallyprotects the crank from the straw or grass which mig-ht otherwise becomewrapped around it. rlhe coupling-arm is made in U form from the edge orrim of the hub or sleeve nearly to a point at which it intersects theshoe, at which point it is curved inward, and at its forward end isprovided with a perforation, through which the end of the rod whichsupports the thrust-brace and shoe passes, being held connectedtherewith by means of a pin passing through the end of said rod. rlhecoupling-arm Fis provided, near its outer or swinging end, with lugs orears g g, and between said lugs one arm of an invertedV U- shaped loop,G, is pivoted, the opposite end, when the parts are in position,restingA upon the face of the coupling-arm, and under which loop thepitman plays, the loop being pivoted in such manner as to permit it tobe turned down upon its `side for the insertion or removal of saidpitman. Between the lugs g, and under the heel of the pivoted end of theloop, is placed a spring, g', which, after the pitman is placed inposition, and the loop is swung over it, serves to hold the forward endof said loop down upon the coupling-arm, thus preventing the accidentaldisplacement of the pitman.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, i sl. The double-jointed coupling-arm F, whichconnects the cutting apparatus with the main frame, provided with thesleeve F1, connecting it with the crank-shaft sleeve, and made to curveupward in front of and to form a shield for the pitmzm, and alsoprovided with the hemispherical shield F3, covering and protecting thecrank-Wheel, and Vibrating with the coupling-arm, as described.

2. The pivoted guiding-loop G, applied to the couplingerm F, andretained in position formgu'iding and holding the pitman-rod by means ofthe spring g', substantially as described.

WM. ANSON WOOD.

Witnesses ADIN THAYER, FRANK S. NIVER.

